Question
Which statements correctly describe the properties of air? Select three options.
Air has mass but no weight.
Air pressure is created by the weight of the atmosphere pushing on Earth’s surface.
Pressure is a measure of how tightly molecules are packed.
Denser air is heavier than less dense air.
Air is less dense at higher altitudes.
Air has mass but no weight.
Air pressure is created by the weight of the atmosphere pushing on Earth’s surface.
Pressure is a measure of how tightly molecules are packed.
Denser air is heavier than less dense air.
Air is less dense at higher altitudes.
Answers
GPT-4o mini
The three statements that correctly describe the properties of air are:
1. **Air pressure is created by the weight of the atmosphere pushing on Earth’s surface.**
2. **Denser air is heavier than less dense air.**
3. **Air is less dense at higher altitudes.**
The statement "Air has mass but no weight" is incorrect because air does have weight due to its mass. The statement "Pressure is a measure of how tightly molecules are packed" is also not entirely accurate as pressure refers to the force exerted by molecules colliding with a surface, not just their packing density.
1. **Air pressure is created by the weight of the atmosphere pushing on Earth’s surface.**
2. **Denser air is heavier than less dense air.**
3. **Air is less dense at higher altitudes.**
The statement "Air has mass but no weight" is incorrect because air does have weight due to its mass. The statement "Pressure is a measure of how tightly molecules are packed" is also not entirely accurate as pressure refers to the force exerted by molecules colliding with a surface, not just their packing density.